Polish Register of Shipping Approval Certificate
for the Physico-Chemical Testing Laboratory
in the range of analyses, mechanical testing
and metallurgical examination

No. TT/34/710405/01

Polish Register of Shipping Approval Certificate
for the Physico-Chemical Testing Laboratory
in the range of eddy-current testing
No. TT/470/710405/07

Technical Inspection Office Approval Certificate
for the Physico-Chemical Testing Laboratory
in the range of analyses, mechanical testing
and metallurgical examination
No. L-1-160/28

Technical Inspection Office Approval Certificate
for manufacture
of copper and brass tubes
No. M-28-8

Polish Register of Shipping Approval Certificate
for manufacture
of copper tubes, brass tubes and rods,
bronze rods and ingots
No. TT/275/710011/00